'90 560SEL. I fixed an small AC system leak and vacuumed the system down and am ready to recharge.
1. how much oil will the vacuum pull out or does it pull any?
2. is there a rule of thumb on how much oil to put in (or any) for a slow leak or a big leak like a ruptured hose?

I've looked all over and can't get a good answer?

Thanks big time.